The bluetooth watch is a good idea I just don't know how realistic the voice would be. I recently started listening to audio books and I noticed it was quite hard to get realistic voicing unless it's online and you pay. I don't know a lot about ai tbh.
Fortunately for me, my applications mean that a robotic voice isn't that jarring.
Frankly, sex doll manufacturers missed an obvious path with robot style dolls. The advantages are numerous
-Less expensive outer skin, since it doesn't have to mimic flesh
-Premade recorded lines are more excusable
-Removable onahole is possible
-No blinking or breathing or eating or drinking is needed
-Sitting in one place is far more realistic with a robot
I don't know a lot about ai tbh. I think the eye thing is down to personal taste since some people have a fetish for fucking dead women so the dead eyes suits them. I think the glasses might be a good idea, but have you considered a tablet instead of a smart phone for face and eyes? That way you could have some sort of ai modeled face. It would be strain on tablet battery though
Lol, that may be the case. "Realistic" sex dolls often give me the uncanny valley creeps*, and I'm a guy who's much less susceptible to uncanny valley.
For the robot head, I would prefer my version, however there is a file in the developer's section of the Galatea v3 printing files that includes a head mount where you can attach a tablet. The weight might be a problem though.
When I was thinking about ways for adding "life" into my robot's face, I thought of maybe using an LED halloween mask. Ultimately, I didn't go through with it because it wouldn't fit on my robot, but it can definitely work for "realistic" sex dolls or another robowaifu project.
You have a lot of good ideas, come visit us on /robowaifu/
*not that I judge sex doll users or the concept of sex dolls, it's just a primal reaction.